Collusion Resistant Anonymous Broadcast Encryption Scheme based on PUF
Lukasz Krzywiecki and Miroslaw Kutylowski
Wroclaw University of Technology
In the paper we describe a broadcast encryption system with a revocation protocol,
where security is based not on cryptographic hardness of some algebraic problem,
but on PUF (Physical Unclonable Function).
The advantage of our scheme is that it is immune to advances of cryptography
(which may suddenly ruin any system depending solely of cryptographic assumptions).
It is resilient to collusion attacks, which are often in practice the Achilles' heel
of schemes based on cryptography. It provides a high level of privacy protection
of the users. On the downside, it requires memory cards as well as time consuming
initialization of PUFs.
Security of the scheme is based on the assumption of randomness of PUF's output
and their unclonability (or a high cost of manufacturing clones).
accepted for TRUST'2011, Pittsburgh
to appear in LNCS